linux-kernel - Re: [stable 4.19][PATCH 1/4] ARM: dts: am4372: Set memory bandwidth limit for DISPC

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Message-ID: <CANLsYkzg2kwxTG=+RZr4CNqQxNSttcyp_bbmO2u=Vq=HJ5_xtA@mail.gmail.com>
Date:   Thu, 17 Oct 2019 10:50:43 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     "# 4 . 7" <stable@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [stable 4.19][PATCH 1/4] ARM: dts: am4372: Set memory bandwidth
 limit for DISPC

On Wed, 16 Oct 2019 at 12:31, Greg KH <gregkh@...uxfoundation.org> wrote:
>
> On Tue, Oct 15, 2019 at 12:59:34AM -0600, Mathieu Poirier wrote:
> > From: Peter Ujfalusi <peter.ujfalusi@...com>
> >
> > commit f90ec6cdf674248dcad85bf9af6e064bf472b841 upstream
> >
> > Set memory bandwidth limit to filter out resolutions above 720p@...z to
> > avoid underflow errors due to the bandwidth needs of higher resolutions.
> >
> > am43xx can not provide enough bandwidth to DISPC to correctly handle
> > 'high' resolutions.
> >
> > Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
> > Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...com>
> > Signed-off-by: Tony Lindgren <tony@...mide.com>
> > Cc: stable <stable@...r.kernel.org> # 4.19
> > Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
> > ---
> >  arch/arm/boot/dts/am4372.dtsi | 2 ++
> >  1 file changed, 2 insertions(+)
>
> What about 5.3?  Is this ok there?
>

Yes - all the patches in this series are also applicable (and apply) to 5.3.y

Thanks,
Mathieu

> thanks,
>
> greg k-h